CDROM/AJ/V112/P0491     Late-Type Stars in M31. II. (Brewer+ 1996)
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Late-Type Stars in M31. II. C-, S-, and M-Star Spectra
      James P. Brewer, Harvey B. Richer, & Dennis R. Crabtree
      <1996, AJ, 112, 491>
      =1995AJ....112..491B
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Abstract:
  We present spectra of AGB stars in M31 for which observations had been
  previously secured using a four-band photometric system (FBPS).  The
  FBPS had been used to identify M-, S-, and carbon-star (C-star)
  candidates, and we use the spectra to show that the FBPS did an
  excellent job at identifying C- and M-stars.  Of the 48 C-stars for
  which spectra were obtained, 7 have strongly enhanced 13C bands
  (J-stars), 2 have strong Halpha emission, while 3 are found to exhibit
  enhanced Li absorption (Li-stars).  Both the J- and Li-stars are
  fainter than predicted by current theoretical models, while the colors
  of the Halpha stars suggest they may be in the terminal phases of their
  evolution.  The C2 and CN bandstrengths of the C-stars are measured,
  and no correlation between these bandstrengths and either Mbol or (V-I)
  is found.  It is suggested that this lack of correlation is due to an
  age spread.  The spectra of the first confirmed S-star in M31 is
  presented, and two evolutionary pathways are suggested to account for
  this star's high luminosity.

Description:
  The files with the prefix CFHT contain the M31 spectra. The table
  below lists the spectra which appear in each of these PostScript
  files. Similarly, the PostScript files with the prefix DAO contain
  spectra of Galactic carbon stars, whose identity is included in the
  table below.  See the text of the printed paper for details.

Filename	Spec1	Spec2	Spec3

cfht01.eps	F3-1.1	F3-2.1	F3-3.1
cfht02.eps	F3-4.1	F3-5.1	F3-5.2
cfht03.eps	F3-7.1	F3-8.1	F3-8.2
cfht04.eps	F3-9.1	F3-10.1	F3-11.1
cfht05.eps	F3-11.2	F3-12.1	F3-13.1
cfht06.eps	F3-13.2	F3-14.1	F3-14.2
cfht07.eps	F3-15.1	F3-15.2	F3-16.1
cfht08.eps	F3-17.1	F3-18.1	F3-18.2
cfht09.eps	F3-19.1	F3-20.1	F3-20.2
cfht10.eps	F3-21.1	F3-22.1	F3-23.1
cfht11.eps	F3-24.2	F3-25.1	F3-26.1
cfht12.eps	F3-27.1	F3-28.1	F3-29.1
cfht13.eps	F3-31.1	F3-32.1	F3-32.2
cfht14.eps	F3-33.1	F3-33.2	F3-34.1
cfht15.eps	F3-35.1	F3-36.1	F3-36.2
cfht16.eps	F4-1.1	F4-2.1	F4-3.1
cfht17.eps	F4-4.1	F4-4.2	F4-5.1
cfht18.eps	F4-6.1	F4-7.1	F4-7.2
cfht19.eps	F4-7.3	F4-8.1	F4-9.1
cfht20.eps	F4-10.1	F4-11.1	F4-12.1
cfht21.eps	F4-13.1	F4-14.1	F4-15.1
cfht22.eps	F4-15.2	F4-16.1	F4-17.1
cfht23.eps	F4-18.1	F4-19.1	F4-20.1
cfht24.eps	F4-21.1	F4-21.2	F4-22.1
cfht25.eps	F4-23.1	F4-24.1	F4-25.2
cfht26.eps	F4-26.1	F4-27.1	F4-28.2
cfht27.eps	F4-29.1	F4-30.1	F4-31.1
cfht28.eps	F4-32.1	F4-33.1	F4-34.1
cfht29.eps	F4-35.1	F4-36.1	F4-37.1
dao01.eps	AW-Cyg	HK-Lyr	RS-Cyg
dao02.eps	RY-Dra	SS-Vir	T-Lyn
dao03.eps	T-Lyr	UX-Dra	U-Cyg
dao04.eps	V-Aql	V-Oph	X-Cnc
dao05.eps	Y-CVn


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(End)                                             Lee Brotzman [ADS] 10-Aug-1996